Method and device for simulating nc working machine

Abstract

Even in an uncuttable state in which an actual rotational direction of a main spindle is not matched with an actually cuttable main spindle rotational direction of a tool, an interference check between a workpiece and the tool is performed. Accordingly, the cuttable main spindle rotational direction of the selected tool or the uncuttable main spindle rotational direction is compared with each main spindle rotational direction of a working machine during execution of a simulation, and it is determined whether an interference check between the tool blade edge and the workpiece is necessary on the basis of the comparison result. When it is determined that the interference check is not necessary in the step above, the interference check between the tool blade edge and the workpiece is not performed. When it is determined that the interference check is necessary, the interference check between the tool blade edge and the workpiece is performed. When the interference therebetween is present, abnormality is detected.

1 . A method for simulating an NC working machine so that a processing shape of a workpiece or a movement of a machine is simulated by using a shape of the tool or the workpiece, the method comprising the steps of:
 deciding a cuttable main spindle rotational direction or an uncuttable main spindle rotational direction for each tool in advance before execution of a simulation;   comparing the cuttable main spindle rotational direction or the uncuttable main spindle rotational direction of the selected tool with each main spindle rotational direction of a working machine during the execution of the simulation so as to determine whether an interference check between the tool and the workpiece is necessary on the basis of the comparison result; and   disabling the interference check between the tool and the workpiece when it is determined that the interference check is not necessary in the step above, enabling the interference check between the tool and the workpiece when it is determined that the interference check is necessary, and detecting abnormality when the interference between the tool and the workpiece is present.   
     
     
         2 . A method for simulating an NC working machine so that a processing shape of a workpiece or a movement of a machine is simulated by using a shape of the tool or the workpiece, the method comprising the steps of:
 deciding a cuttable main spindle rotational direction and a cuttable feed axis direction or an uncuttable main spindle rotational direction and an uncuttable feed axis direction for each tool in advance before execution of a simulation;   comparing the cuttable main spindle rotational direction or the uncuttable main spindle rotational direction of the selected tool with each main spindle rotational direction of a working machine during the execution of the simulation so as to determine whether an interference check between the tool and the workpiece is necessary;   comparing the cuttable feed axis direction or the uncuttable feed axis direction of the selected tool with each feed axis direction of the working machine during the execution of the simulation so as to determine whether an interference check between the tool and the workpiece is necessary on the basis of the comparison result; and   disabling the interference check between the tool and the workpiece when it is determined that the interference check is not necessary in the steps above, enabling the interference check between the tool and the workpiece when it is determined that the interference check is necessary, and detecting abnormality when the interference between the tool and the workpiece is present.   
     
     
         3 . The method according to  claim 2 ,
 wherein   the cuttable main spindle rotational direction and the cuttable feed axis direction or the uncuttable main spindle rotational direction and the uncuttable feed axis direction are decided on the basis of wedge clamp data of the tool set in advance in tool data.   
     
     
         4 . The method according to  claim 1 ,
 wherein   the cuttable main spindle rotational direction or the uncuttable main spindle rotational direction is expressed as a vector of the cuttable main spindle rotational direction or a vector of the uncuttable main spindle rotational direction given to tool shape data related to data of each tool stored in the tool data.   
     
     
         5 . The method according to  claim 2 ,
 wherein   the cuttable main spindle rotational direction and the cuttable feed axis direction or the uncuttable main spindle rotational direction and the uncuttable feed axis direction are expressed as a vector of the cuttable main spindle rotational direction and a vector of the cuttable feed axis direction or a vector of the uncuttable main spindle rotational direction and a vector of the uncuttable feed axis direction given to tool shape data related to data of each tool stored in the tool data.   
     
     
         6 . The method according to  claim 2 ,
 wherein   the cuttable main spindle rotational direction and the cuttable feed axis direction or the uncuttable main spindle rotational direction and the uncuttable feed axis direction of the tool data are expressed as vectors given to tool shape data, and in the case of a tool allowing a deviation between the vectors within a certain range, an allowable angle is given to the vectors.   
     
     
         7 . A device for simulating an NC working machine so that a processing shape of a workpiece or a movement of a machine is simulated by using a shape of the tool or the workpiece, the device comprising:
 a storage unit which stores a cuttable main spindle rotational direction or an uncuttable main spindle rotational direction for each tool;   an interference check condition determination/update unit which compares the cuttable main spindle rotational direction or the uncuttable main spindle rotational direction of the selected tool with each main spindle rotational direction of a working machine during the execution of the simulation so as to determine whether an interference check between the tool and the workpiece is necessary on the basis of the comparison result; and   a working machine simulation unit which disables the interference check between the tool and the workpiece when the interference check condition determination/update unit determines that the interference check is not necessary, enables the interference check between the tool and the workpiece when the interference check condition determination/update unit determines that the interference check is necessary, and detects abnormality when the interference between the tool and the workpiece is present.   
     
     
         8 . A device for simulating an NC working machine so that a processing shape of a workpiece or a movement of a machine is simulated by using a shape of the tool or the workpiece, the device comprising:
 a storage unit which stores a cuttable main spindle rotational direction and a cuttable feed axis direction or an uncuttable main spindle rotational direction and an uncuttable feed axis direction for each tool;   an interference check condition determination/update unit which compares the cuttable main spindle rotational direction or the uncuttable main spindle rotational direction of the selected tool with each main spindle rotational direction of the working machine, and compares the cuttable feed axis direction or the uncuttable feed axis direction of the selected tool with each feed axis direction of the working machine during the execution of the simulation so as to determine whether an interference check between the tool and the workpiece is necessary on the basis of the comparison results; and   a working machine simulation unit which disables the interference check between the tool and the workpiece when the interference check condition determination/update unit determines that the interference check is not necessary, enables the interference check between the tool and the workpiece when the interference check condition determination/update unit determines that the interference check is necessary, and detects abnormality when the interference between the tool and the workpiece is present.   
     
     
         9 . A device for simulating an NC working machine so that a processing shape of a workpiece or a movement of a machine is simulated by using a shape of the tool or the workpiece, the device comprising:
 a storage unit which stores wedge clamp data of the tool for each tool;   an interference check condition determination/update unit which decides a cuttable main spindle rotational direction or an uncuttable main spindle rotational direction and a cuttable feed axis direction or an uncuttable feed axis direction on the basis of the wedge clamp data of the tool, compares the cuttable main spindle rotational direction or the uncuttable main spindle rotational direction of the selected tool with each main spindle rotational direction of the working machine, and compares the cuttable feed axis direction or the uncuttable feed axis direction of the selected tool with each feed axis direction of the working machine during the execution of the simulation so as to determine whether an interference check between the tool and the workpiece is necessary on the basis of the comparison results; and   a working machine simulation unit which disables the interference check between the tool and the workpiece when the interference check condition determination/update unit determines that the interference check is not necessary, enables the interference check between the tool and the workpiece when the interference check condition determination/update unit determines that the interference check is necessary, and detects abnormality when the interference between the tool and the workpiece is present.   
     
     
         10 . The device according to  claim 7 ,
 wherein   the cuttable main spindle rotational direction or the uncuttable main spindle rotational direction is expressed as a vector of the cuttable main spindle rotational direction or a vector of the uncuttable main spindle rotational direction given to tool shape data related to data of each tool stored in the tool data.   
     
     
         11 . The device according to  claim 8 ,
 wherein   the cuttable main spindle rotational direction and the cuttable feed axis direction or the uncuttable main spindle rotational direction and the uncuttable feed axis direction are expressed as a vector of the cuttable main spindle rotational direction and a vector of the cuttable feed axis direction or a vector of the uncuttable main spindle rotational direction and a vector of the uncuttable feed axis direction given to tool shape data related to data of each tool stored in the tool data.   
     
     
         12 . The device according to  claim 8 ,
 wherein   the cuttable main spindle rotational direction and the cuttable feed axis direction or the uncuttable main spindle rotational direction and the uncuttable feed axis direction of the tool data are expressed as vectors given to tool shape data, and in the case of a tool allowing a deviation between the vectors within a certain range, an allowable angle is given to the vectors.   
     
     
         13 . The method according to  claim 3 ,
 wherein   the cuttable main spindle rotational direction and the cuttable feed axis direction or the uncuttable main spindle rotational direction and the uncuttable feed axis direction are expressed as a vector of the cuttable main spindle rotational direction and a vector of the cuttable feed axis direction or a vector of the uncuttable main spindle rotational direction and a vector of the uncuttable feed axis direction given to tool shape data related to data of each tool stored in the tool data.   
     
     
         14 . The method according to  claim 3 ,
 wherein   the cuttable main spindle rotational direction and the cuttable feed axis direction or the uncuttable main spindle rotational direction and the uncuttable feed axis direction of the tool data are expressed as vectors given to tool shape data, and in the case of a tool allowing a deviation between the vectors within a certain range, an allowable angle is given to the vectors.   
     
     
         15 . The device according to  claim 9 ,
 wherein   the cuttable main spindle rotational direction and the cuttable feed axis direction or the uncuttable main spindle rotational direction and the uncuttable feed axis direction are expressed as a vector of the cuttable main spindle rotational direction and a vector of the cuttable feed axis direction or a vector of the uncuttable main spindle rotational direction and a vector of the uncuttable feed axis direction given to tool shape data related to data of each tool stored in the tool data.   
     
     
         16 . The device according to  claim 9 ,
 wherein   the cuttable main spindle rotational direction and the cuttable feed axis direction or the uncuttable main spindle rotational direction and the uncuttable feed axis direction of the tool data are expressed as vectors given to tool shape data, and in the case of a tool allowing a deviation between the vectors within a certain range, an allowable angle is given to the vectors.